If you do not have a lot of space in your car, a hideaway car subwoofer is your best option. This is usually a compact woofer with a slim form factor that allows it to be easily tucked under a seat. One of the best things about the under-seat car subwoofer is that it is very easy to install by almost anyone. Additionally, since it uses the space under the seat as an enclosure, it produces a deeper and even more powerful bass which compensates for its small size. The MB Quart Compact Sub is a popular solution for car owners on a budget that doesn't want to sacrifice sound quality . This model is an all-inclusive solution that packs a powerful bass. The cone is at 8 inches or 10 inches, and since the cone is small, it vibrates more and produces a punchy bass that is harmonious. Additionally, this under seat subwoofer can be remotely controlled for better convenience. Also on the upside, if you like tweaking your music then there is a number of customizations that you can do. It still sounds good at default setting for those who simply do not care about bass tuning. Additionally, there are many audio customizations that can be performed in this woofer. People who care how their bass sound will like this unit very much. As almost expected from a company like MB Quart, it is equipped with advanced circuits that help protect and prolong its lifespan. Circuits like overheat protection or reverse polarity can come in handy for those who like to listen to their music loud. As for the built quality, it is excellent. The whole unit is made of aluminum that does a good job absorbing heat and preventing the woofer from overheating during extended usage at loud volumes. Moreover, the front metal grille adds protection to the diaphragm and help to extend the life of the woofer. Overall, this is a excellent model, and this hideaway subwoofer from MB Quart is durable, offers many audio customizations and very easy to install.